High powered illuminating device



June 26, 1934. M, ADAMS El AL HIGH POWERED ILLUMINATING DEVICE Filed 01:. 22. 1931 2 Sheets-Sheet 1 77 ad INVENTOR 1 Mfi Q/LLJ BY ATTORNEYS June 26, 1934.

M. ADAMS El AL 1,963,949

HIGH POWERED ILLUMINATING DEVICE Filed Oct. 22. 1931 2 Sheets-Sheet 2 L u l Z f 5-6 v INVENTORY E- BY 9%: ATTORNEY) Patented June 26,1934

UNITED STATES HIGH POWERED ILLUMINATING DEVICE Maude Adams and Raymond F. Howe, New York, N. Y.

Application October 22, 1931, Serial No. 570,272

9 Claims.

This invention relates to illuminating devices, and with particularity to lamps of the so-called high powered type.

An object of the invention is to provide a cooling system for high powered incandescent lamps, for example lamps of upwards of 10 k. w. capacity. It will be understood, of course, that the invention is not limited to any specific size -or design of lamp.

'16" A feature of the invention resides in a combination of a high powered lamp and a reflector, together with means for cooling both the reflector and the lamp. 1

, A further feature of the invention relates to 15"an air cooled housing and reflector for a high powered incandescent lamp.

A further feature relates to the organization and arrangement of parts which go to make up an ef icient high-powered light source. 7

20'" Other features and advantages not specifically enumerated will be apparent after a consideration of the following detail descriptions and the appended claims.

In the drawings,

Figure 1 represents a front view of the lamp and lamp housing according to the invention;

Fig. 2 is a sectional View in elevation of the lamp and lamp housing of Fig.1;

I Fig. 3 is a diagrammatic showing of one pre- 36 'ferred manner of supporting the lamp andlamp housing according to the invention;

Fig. 4 represents a modified manner of supporting the lamp and lamp housing according ,to the invention; and

35"" Fig. 5 shows a still further manner of supporting the lamp and'lamp housing.

Referring more particularly to Figs. 1' and 2, there is'shown a lamp having an evacuated en- ..-.velope 1, and mounted within the envelope an 6 incandescent member or members 2. The lamp is preferably, although not necessarily, of the type disclosed in application Serial No. 555,004, filed August 1, 1931 and is provided with a base 3 which is supported on an adjustable standard 4.

'The said standard 4 is provided with means for adjusting it with respect to the reflector, and for this purpose the said standard 4 carries a rack like member 5 with which cooperates a pinion 6, the pinion 6 being rotatable by a handle 7'. The

(y'stand'ard 4 and the rack 5 are mounted for sliding movement on the interior wall 7 of the lamp housing, this wall being preferably cylindrical and provided with staggered ventilated openings 8. The cylindrical portion of the lamp housing is 55 also provided with an outer wall 9, likewise provided with. ventilated openings. 10 which are staggered relatively to the openings?! soasto prevent the light emerging radially from the h i ,Asshown clearly in the drawings, the 6walls '7 and 9 arespaced apart to provide an air circulating chamber. Attached to the cylindrical part of the housing by means of suitable bolts 11 is a hemispherical or parabolic member 12. Member 12 is provided at its apex with an opening in which is fitted a manifold member 13, the member 13 being provided with a flange 14 which is welded, riveted, or otherwise fastened to the outerface of the member 12. The member 13 is connected by means of a pipe 15 to a suitable blower or exhaust pump 16 for purposes hereinafter described.

Attached to the circular edge of the member 12' is a ring 17 which supports the usual reflecting surface 18. By means of the ring 1'7 the reflector 18 is held in spaced relation with respect to the housing member 12. Any convenient manner of attaching the ring 17 to the member 12 may be utilized. For example, this ring may be welded or riveted to said member 12, or if desired,.the said ring 1'7 may be clamped between the opposing flanges 18 and 19 of the members 12 and 9 respectively. Disposed within the space between the members 12 and 18 are a series of pipes 20 to 27 inclusive, which lead into and are supported at one end, by the manifold member 13. Four of these pipes, namely the pipes 20, 22, 24 and 26 pass through the ring 17 and are bent back upon themselves to conform to the curvature of the reflector 18. The remaining set of pipes, namely pipes 21, 23, and 27 have their open ends terminating at the ring17. Consequently when the incandescent member 2 is operating at a high temperature there is considerable heat generated and radiated to the reflector 18, and unless this reflector is cooled the heat, after a relatively short.

time, ruins the reflective coating. However, by.

means of the pipes 20, 22, 24 and 26, in conjunce, tionwith the blower 16, there is a continuous supply of cool air circulated substantially over the entire surface of the reflector. It will also be noted that the pipes as arranged in the drawingsprovide an efficient coolingfor the reflector 18 without in any way interfering with the reflection of light fromsaid reflector. On the other hand,

the pipes 21, 23, 25 and 27 communicate directly with the cylindrical portion of the lamp housing,

and there is thus a continuous supply of coolair directed to this portion of the housing and tothe lamp itself, thusenabling the lamp to be operated at a veryjhigh temperature without danger of the lamp itself becoming overheated, or the mirror coating being ruined. I

It .will be understood, of.course, that it is not absolutely. necessary that the pipes 20, 22, Zland; 26 have their ends shaped in the manner shown in the drawings since if desired, these pipes may be carried to any convenient part of the;interior of, the;lamp housingwhere'. the discharge air is capable .of efficiently. coolingthereflector-18 and the lamp proper. Preferably, although not necessarily, the lamp housing and blower 16 are constructed as a unit so as to be capable of being mounted on a single pedestal.

Thus, for example, there is shown in Fig. 3 one preferred manner of mounting the lamp and lamp housing for vertical adjustment, the said housing being provided with laterally extending arms 28, 29, which are supported in bearings in the U-shaped bracket member 31. The arm 28 carries a worm gear 32 rotated by a worm 33 which in turn is adapted to be rotated by the adjacent hand wheel 34. The bracket 31 is supported on any well known type of pedestal, for example. in the vertical adjustable telescopic arms 35 and 36, the pedestal preferably being provided with roller feet for enabling the entire assembly to be moved to various positions as desire-d.

In the event that it is desired to place the lamp housing at a point where it cannot be adjusted directly by means of the hand wheel 34, the arm 28 may be provided with a pulley 3'7 which is capable of being rotated by a belt or the like from any convenient point. Thus, for example there is shown in Fig. 4 a modified manner of supporting the lamp and lamp housing. In this embodiment the lamp housing is adapted to be suspended from overhead by means of the bracket 38 and the hook member 39. The arm 28 which supports the lamp. housing carries a pulley 40 around which passes a rope or belt 41, by means of which the lamp housing may be tilted to the desired angle from a convenient point. Instead of employing .a pulley for tilting the lamp, the lamp may be suspended as shown in Figs. 4 and 5. However, in Fig. 5 the arm 28 which supports the lamp hous- 'ing carries a wall 42 which is provided with oppovenient point.

sitely. extending arms 43 and 44. Suitable ropes or strings 45 and 46 are fastened respectively to the said arms by means of which the lamp housing may be tilted to the desired angle from a con- The arrangement disclosed in Figs. 4 and 5 is of particular advantage where the lamp is to be positioned at a considerable height above the floor or ground. For example, in auditorium lighting it is sometimes required to mount -the lamps at the ceiling, and to be able to adjust or tilt the lamps from the auditorium floor or other convenient point. The manner of supporting and tilting disclosed in Figs. 4 and 5 is well suited to this purpose since the ropes 41, 45 and '46 may extend down from the lamp to a convenient point where they may be adjusted as required.

While certain specific arrangements of apparatus are disclosed in the drawings, it will be understood that the invention is not limited thereto, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

Furthermore, it will be, understood that the lamp 1 as shown in the drawings is intended to be 1 ing through said rear housing wall and into the space betweensaid wall and reflector, of a plurality of independent air pipes disposed in the space between the rear housing wall and reflector, said pipes connected at one end to said air inlet, the other ends of said pipes delivering past the forward edge of the reflector.

2. The combination according to claim 1 in which the air inlet extends through the rear housing wall at a point opposite the apex of the reflector.

3. The combination according to claim 1 in which certain of said air pipes extend beyond and are reversely bent over the forward edge of the reflector to deliver a cooling medium upon the reflecting surface of the reflector at various areas thereof.

4. The combination with a lamp housing, a reflector supported within said housing and an air inlet disposed exteriorly of the reflector opposite its apex, and supported upon said housing, of a plurality of annularly spaced apart air pipes disposed exteriorly of the reflector and each connected at one end to said air inlet, the free delivery ends of said spaced apart air pipes extending to and delivering beyond the forward edge of said reflector.

5. The combination according to claim '4 in which certain of the air pipes at their delivery ends are reversely bent to deliver a cooling medium upon the reflecting surface of the reflector at various areas thereof. a

6. The combination with a lamp housing, a lamp disposed centrally within and supported by said housing, a reflector also disposed within and supported by said housing and having its reflecting surface presenting towards said lamp, and an air inlet disposed exteriorly of the reflector opposite the apex thereof, of a plurality of air pipes also disposed exteriorly and to the rear of the reflector and in annularly spaced part relation to each other, said pipes being connected at one end thereof to the air inlet and extending forwardly along the outer wall of the reflector to anddelivering beyond the forward edge of the reflector to cool both the reflector and lamp.

'7. In an apparatus of the class described, a lamp, a housing made in sections, one section having spaced apart walls, and forming an open ended housing and support for the lamp, a rearranged in annularly spaced apart relation to;

each other and each connected at one end to said air inlet, the other ends of said pipes extending'to the forward edge of the reflector, the forward ends of some of said pipes delivering into the open ended housing while others deliver upon the reflecting surface of the reflector.

8. The combination according to claim 7 in which an annular ring is secured at the meeting edges of the housing sections and consti- I tutes a support for the reflector.

9. The combination according to claim '7 in which the inner and outer walls of the double formed with openings respectively arranged in staggered relation.

' MAUDE ADAMS.

RAYMOND F- HOWE.

130, disposed in the space between the reflector and 4 'its enclosing housing section, said pipes being 145. walled housing section which houses the lamp are 

